Oculus Rift's USP is not in gaming its in 3D TV
I think everyone is overlooking the potential impact Oculus Rift will have on watching 3D TV content like sport. Okay you won't be able to move the camera around but the 3D effect will be SO MUCH more of an immersive effect than having a 3D effect on a panel infront of you. Especially things like the in-car cameras in F1 cars. Or the over-the-scrum shots in rugby or at line outs.
It'd be like buying a ticket to the actual event.
It wouldn't need anymore modification than an HDMI input. boom